Home / 708,686.72-977,995.32-386,394.20

Finding the Fourth Proportional to 708,686.72, 977,995.32 and 386,394.20

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Solution

The fourth proportional to 708,686.72, 977,995.32 and 386,394.20 is: 533,228.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,686.72 : 977,995.32 = 386,394.20 : x
  2. Step 2: Convert to fraction form
    708,686.72/977,995.32 = 386,394.20/x
  3. Step 3: Cross multiply
    708,686.72x = 977,995.32 × 386,394.20
  4. Step 4: Simplify right side
    708,686.72x = 377,891,719,275.14
  5. Step 5: Solve for x
    x = 377,891,719,275.14/708,686.72
  6. Step 6: Final answer
    x = 533,228.17

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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.