Home / 724,807.80-1,087,211.70-472,865.40

Finding the Fourth Proportional to 724,807.80, 1,087,211.70 and 472,865.40

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Solution

The fourth proportional to 724,807.80, 1,087,211.70 and 472,865.40 is: 709,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,807.80 : 1,087,211.70 = 472,865.40 : x
  2. Step 2: Convert to fraction form
    724,807.80/1,087,211.70 = 472,865.40/x
  3. Step 3: Cross multiply
    724,807.80x = 1,087,211.70 × 472,865.40
  4. Step 4: Simplify right side
    724,807.80x = 514,104,795,405.18
  5. Step 5: Solve for x
    x = 514,104,795,405.18/724,807.80
  6. Step 6: Final answer
    x = 709,298.10

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Double scale
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Similar ratio
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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.