Home / 869,651.40-1,304,477.10-238,564.20

Finding the Fourth Proportional to 869,651.40, 1,304,477.10 and 238,564.20

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Solution

The fourth proportional to 869,651.40, 1,304,477.10 and 238,564.20 is: 357,846.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,651.40 : 1,304,477.10 = 238,564.20 : x
  2. Step 2: Convert to fraction form
    869,651.40/1,304,477.10 = 238,564.20/x
  3. Step 3: Cross multiply
    869,651.40x = 1,304,477.10 × 238,564.20
  4. Step 4: Simplify right side
    869,651.40x = 311,201,535,779.82
  5. Step 5: Solve for x
    x = 311,201,535,779.82/869,651.40
  6. Step 6: Final answer
    x = 357,846.30

Related Problems

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Half scale
Find fourth proportional to 1,739,302.80, 2,608,954.20 and 477,128.40
Double scale
Find fourth proportional to 869,652.40, 1,304,478.60 and 238,565.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.