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Finding the Fourth Proportional to 670,529.68, 924,952.21 and 398,685.24

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Solution

The fourth proportional to 670,529.68, 924,952.21 and 398,685.24 is: 549,960.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,529.68 : 924,952.21 = 398,685.24 : x
  2. Step 2: Convert to fraction form
    670,529.68/924,952.21 = 398,685.24/x
  3. Step 3: Cross multiply
    670,529.68x = 924,952.21 × 398,685.24
  4. Step 4: Simplify right side
    670,529.68x = 368,764,792,835.67
  5. Step 5: Solve for x
    x = 368,764,792,835.67/670,529.68
  6. Step 6: Final answer
    x = 549,960.43

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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.