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Finding the Fourth Proportional to 611,461.20, 913,074.36 and 499,363.95

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Solution

The fourth proportional to 611,461.20, 913,074.36 and 499,363.95 is: 745,683.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,461.20 : 913,074.36 = 499,363.95 : x
  2. Step 2: Convert to fraction form
    611,461.20/913,074.36 = 499,363.95/x
  3. Step 3: Cross multiply
    611,461.20x = 913,074.36 × 499,363.95
  4. Step 4: Simplify right side
    611,461.20x = 455,956,419,053.32
  5. Step 5: Solve for x
    x = 455,956,419,053.32/611,461.20
  6. Step 6: Final answer
    x = 745,683.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.