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Finding the Fourth Proportional to 674,959.28, 931,458.56 and 402,976.48

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Solution

The fourth proportional to 674,959.28, 931,458.56 and 402,976.48 is: 556,116.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,959.28 : 931,458.56 = 402,976.48 : x
  2. Step 2: Convert to fraction form
    674,959.28/931,458.56 = 402,976.48/x
  3. Step 3: Cross multiply
    674,959.28x = 931,458.56 × 402,976.48
  4. Step 4: Simplify right side
    674,959.28x = 375,355,891,774.67
  5. Step 5: Solve for x
    x = 375,355,891,774.67/674,959.28
  6. Step 6: Final answer
    x = 556,116.35

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1.5x scale

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.