Home / 698,574.70-1,047,862.05-432,854.20

Finding the Fourth Proportional to 698,574.70, 1,047,862.05 and 432,854.20

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Solution

The fourth proportional to 698,574.70, 1,047,862.05 and 432,854.20 is: 649,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,574.70 : 1,047,862.05 = 432,854.20 : x
  2. Step 2: Convert to fraction form
    698,574.70/1,047,862.05 = 432,854.20/x
  3. Step 3: Cross multiply
    698,574.70x = 1,047,862.05 × 432,854.20
  4. Step 4: Simplify right side
    698,574.70x = 453,571,489,363.11
  5. Step 5: Solve for x
    x = 453,571,489,363.11/698,574.70
  6. Step 6: Final answer
    x = 649,281.30

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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.