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Finding the Fourth Proportional to 692,299.52, 955,417.92 and 390,487.04

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Solution

The fourth proportional to 692,299.52, 955,417.92 and 390,487.04 is: 538,897.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,299.52 : 955,417.92 = 390,487.04 : x
  2. Step 2: Convert to fraction form
    692,299.52/955,417.92 = 390,487.04/x
  3. Step 3: Cross multiply
    692,299.52x = 955,417.92 × 390,487.04
  4. Step 4: Simplify right side
    692,299.52x = 373,078,315,543.76
  5. Step 5: Solve for x
    x = 373,078,315,543.76/692,299.52
  6. Step 6: Final answer
    x = 538,897.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.