Home / 724,710.10-1,087,065.15-455,271.70

Finding the Fourth Proportional to 724,710.10, 1,087,065.15 and 455,271.70

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Solution

The fourth proportional to 724,710.10, 1,087,065.15 and 455,271.70 is: 682,907.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,710.10 : 1,087,065.15 = 455,271.70 : x
  2. Step 2: Convert to fraction form
    724,710.10/1,087,065.15 = 455,271.70/x
  3. Step 3: Cross multiply
    724,710.10x = 1,087,065.15 × 455,271.70
  4. Step 4: Simplify right side
    724,710.10x = 494,909,998,851.26
  5. Step 5: Solve for x
    x = 494,909,998,851.26/724,710.10
  6. Step 6: Final answer
    x = 682,907.55

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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.