Home / 708,416.20-977,605.72-386,125.28

Finding the Fourth Proportional to 708,416.20, 977,605.72 and 386,125.28

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Solution

The fourth proportional to 708,416.20, 977,605.72 and 386,125.28 is: 532,848.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,416.20 : 977,605.72 = 386,125.28 : x
  2. Step 2: Convert to fraction form
    708,416.20/977,605.72 = 386,125.28/x
  3. Step 3: Cross multiply
    708,416.20x = 977,605.72 × 386,125.28
  4. Step 4: Simplify right side
    708,416.20x = 377,478,282,364.60
  5. Step 5: Solve for x
    x = 377,478,282,364.60/708,416.20
  6. Step 6: Final answer
    x = 532,848.18

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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.