Home / 708,398.18-977,583.24-386,108.30

Finding the Fourth Proportional to 708,398.18, 977,583.24 and 386,108.30

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Solution

The fourth proportional to 708,398.18, 977,583.24 and 386,108.30 is: 532,826.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,398.18 : 977,583.24 = 386,108.30 : x
  2. Step 2: Convert to fraction form
    708,398.18/977,583.24 = 386,108.30/x
  3. Step 3: Cross multiply
    708,398.18x = 977,583.24 × 386,108.30
  4. Step 4: Simplify right side
    708,398.18x = 377,453,002,904.89
  5. Step 5: Solve for x
    x = 377,453,002,904.89/708,398.18
  6. Step 6: Final answer
    x = 532,826.05

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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.