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Finding the Fourth Proportional to 478,080.47, 716,858.21 and 328,358.45

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Solution

The fourth proportional to 478,080.47, 716,858.21 and 328,358.45 is: 492,357.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,080.47 : 716,858.21 = 328,358.45 : x
  2. Step 2: Convert to fraction form
    478,080.47/716,858.21 = 328,358.45/x
  3. Step 3: Cross multiply
    478,080.47x = 716,858.21 × 328,358.45
  4. Step 4: Simplify right side
    478,080.47x = 235,386,447,941.98
  5. Step 5: Solve for x
    x = 235,386,447,941.98/478,080.47
  6. Step 6: Final answer
    x = 492,357.39

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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.