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Finding the Fourth Proportional to 478,748.40, 716,740.20 and 292,124.40

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Solution

The fourth proportional to 478,748.40, 716,740.20 and 292,124.40 is: 437,343.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,748.40 : 716,740.20 = 292,124.40 : x
  2. Step 2: Convert to fraction form
    478,748.40/716,740.20 = 292,124.40/x
  3. Step 3: Cross multiply
    478,748.40x = 716,740.20 × 292,124.40
  4. Step 4: Simplify right side
    478,748.40x = 209,377,300,880.88
  5. Step 5: Solve for x
    x = 209,377,300,880.88/478,748.40
  6. Step 6: Final answer
    x = 437,343.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.