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Finding the Fourth Proportional to 478,360.40, 716,158.20 and 291,736.40

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Solution

The fourth proportional to 478,360.40, 716,158.20 and 291,736.40 is: 436,761.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,360.40 : 716,158.20 = 291,736.40 : x
  2. Step 2: Convert to fraction form
    478,360.40/716,158.20 = 291,736.40/x
  3. Step 3: Cross multiply
    478,360.40x = 716,158.20 × 291,736.40
  4. Step 4: Simplify right side
    478,360.40x = 208,929,415,098.48
  5. Step 5: Solve for x
    x = 208,929,415,098.48/478,360.40
  6. Step 6: Final answer
    x = 436,761.52

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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.