Home / 753,580.65-1,039,953.10-409,423.40

Finding the Fourth Proportional to 753,580.65, 1,039,953.10 and 409,423.40

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Solution

The fourth proportional to 753,580.65, 1,039,953.10 and 409,423.40 is: 565,010.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,580.65 : 1,039,953.10 = 409,423.40 : x
  2. Step 2: Convert to fraction form
    753,580.65/1,039,953.10 = 409,423.40/x
  3. Step 3: Cross multiply
    753,580.65x = 1,039,953.10 × 409,423.40
  4. Step 4: Simplify right side
    753,580.65x = 425,781,134,042.54
  5. Step 5: Solve for x
    x = 425,781,134,042.54/753,580.65
  6. Step 6: Final answer
    x = 565,010.70

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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.