Home / 521,746.10-783,569.55-456,427.70

Finding the Fourth Proportional to 521,746.10, 783,569.55 and 456,427.70

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Solution

The fourth proportional to 521,746.10, 783,569.55 and 456,427.70 is: 685,472.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,746.10 : 783,569.55 = 456,427.70 : x
  2. Step 2: Convert to fraction form
    521,746.10/783,569.55 = 456,427.70/x
  3. Step 3: Cross multiply
    521,746.10x = 783,569.55 × 456,427.70
  4. Step 4: Simplify right side
    521,746.10x = 357,642,847,496.54
  5. Step 5: Solve for x
    x = 357,642,847,496.54/521,746.10
  6. Step 6: Final answer
    x = 685,472.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.