Home / 708,569.46-977,754.96-398,439.18

Finding the Fourth Proportional to 708,569.46, 977,754.96 and 398,439.18

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Solution

The fourth proportional to 708,569.46, 977,754.96 and 398,439.18 is: 549,806.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,569.46 : 977,754.96 = 398,439.18 : x
  2. Step 2: Convert to fraction form
    708,569.46/977,754.96 = 398,439.18/x
  3. Step 3: Cross multiply
    708,569.46x = 977,754.96 × 398,439.18
  4. Step 4: Simplify right side
    708,569.46x = 389,575,884,503.33
  5. Step 5: Solve for x
    x = 389,575,884,503.33/708,569.46
  6. Step 6: Final answer
    x = 549,806.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.