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Finding the Fourth Proportional to 670,136.68, 924,923.13 and 398,152.22

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Solution

The fourth proportional to 670,136.68, 924,923.13 and 398,152.22 is: 549,529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,136.68 : 924,923.13 = 398,152.22 : x
  2. Step 2: Convert to fraction form
    670,136.68/924,923.13 = 398,152.22/x
  3. Step 3: Cross multiply
    670,136.68x = 924,923.13 × 398,152.22
  4. Step 4: Simplify right side
    670,136.68x = 368,260,192,914.23
  5. Step 5: Solve for x
    x = 368,260,192,914.23/670,136.68
  6. Step 6: Final answer
    x = 549,529.98

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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.