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Finding the Fourth Proportional to 347,685.40, 487,459.40 and 347,685.40

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Solution

The fourth proportional to 347,685.40, 487,459.40 and 347,685.40 is: 487,459.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,685.40 : 487,459.40 = 347,685.40 : x
  2. Step 2: Convert to fraction form
    347,685.40/487,459.40 = 347,685.40/x
  3. Step 3: Cross multiply
    347,685.40x = 487,459.40 × 347,685.40
  4. Step 4: Simplify right side
    347,685.40x = 169,482,516,472.76
  5. Step 5: Solve for x
    x = 169,482,516,472.76/347,685.40
  6. Step 6: Final answer
    x = 487,459.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.