Home / 674,411.60-1,011,617.40-643,307.60

Finding the Fourth Proportional to 674,411.60, 1,011,617.40 and 643,307.60

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Solution

The fourth proportional to 674,411.60, 1,011,617.40 and 643,307.60 is: 964,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,411.60 : 1,011,617.40 = 643,307.60 : x
  2. Step 2: Convert to fraction form
    674,411.60/1,011,617.40 = 643,307.60/x
  3. Step 3: Cross multiply
    674,411.60x = 1,011,617.40 × 643,307.60
  4. Step 4: Simplify right side
    674,411.60x = 650,781,161,712.24
  5. Step 5: Solve for x
    x = 650,781,161,712.24/674,411.60
  6. Step 6: Final answer
    x = 964,961.40

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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.