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Finding the Fourth Proportional to 497,665.04, 686,561.08 and 316,279.76

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Solution

The fourth proportional to 497,665.04, 686,561.08 and 316,279.76 is: 436,328.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,665.04 : 686,561.08 = 316,279.76 : x
  2. Step 2: Convert to fraction form
    497,665.04/686,561.08 = 316,279.76/x
  3. Step 3: Cross multiply
    497,665.04x = 686,561.08 × 316,279.76
  4. Step 4: Simplify right side
    497,665.04x = 217,145,373,607.74
  5. Step 5: Solve for x
    x = 217,145,373,607.74/497,665.04
  6. Step 6: Final answer
    x = 436,328.37

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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.