Home / 1,070,420.40-1,604,269.80-438,620.40

Finding the Fourth Proportional to 1,070,420.40, 1,604,269.80 and 438,620.40

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Solution

The fourth proportional to 1,070,420.40, 1,604,269.80 and 438,620.40 is: 657,372.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,420.40 : 1,604,269.80 = 438,620.40 : x
  2. Step 2: Convert to fraction form
    1,070,420.40/1,604,269.80 = 438,620.40/x
  3. Step 3: Cross multiply
    1,070,420.40x = 1,604,269.80 × 438,620.40
  4. Step 4: Simplify right side
    1,070,420.40x = 703,665,461,383.92
  5. Step 5: Solve for x
    x = 703,665,461,383.92/1,070,420.40
  6. Step 6: Final answer
    x = 657,372.99

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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.