Home / 657,421.20-986,520.60-433,429.20

Finding the Fourth Proportional to 657,421.20, 986,520.60 and 433,429.20

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Solution

The fourth proportional to 657,421.20, 986,520.60 and 433,429.20 is: 650,400.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,421.20 : 986,520.60 = 433,429.20 : x
  2. Step 2: Convert to fraction form
    657,421.20/986,520.60 = 433,429.20/x
  3. Step 3: Cross multiply
    657,421.20x = 986,520.60 × 433,429.20
  4. Step 4: Simplify right side
    657,421.20x = 427,586,834,441.52
  5. Step 5: Solve for x
    x = 427,586,834,441.52/657,421.20
  6. Step 6: Final answer
    x = 650,400.13

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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.