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Finding the Fourth Proportional to 525,779.40, 788,669.10 and 442,835.40

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Solution

The fourth proportional to 525,779.40, 788,669.10 and 442,835.40 is: 664,253.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,779.40 : 788,669.10 = 442,835.40 : x
  2. Step 2: Convert to fraction form
    525,779.40/788,669.10 = 442,835.40/x
  3. Step 3: Cross multiply
    525,779.40x = 788,669.10 × 442,835.40
  4. Step 4: Simplify right side
    525,779.40x = 349,250,596,366.14
  5. Step 5: Solve for x
    x = 349,250,596,366.14/525,779.40
  6. Step 6: Final answer
    x = 664,253.10

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Half scale
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Double scale
Find fourth proportional to 525,780.40, 788,670.60 and 442,836.40
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.