Home / 781,560.66-1,078,756.47-442,225.74

Finding the Fourth Proportional to 781,560.66, 1,078,756.47 and 442,225.74

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Solution

The fourth proportional to 781,560.66, 1,078,756.47 and 442,225.74 is: 610,386.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,560.66 : 1,078,756.47 = 442,225.74 : x
  2. Step 2: Convert to fraction form
    781,560.66/1,078,756.47 = 442,225.74/x
  3. Step 3: Cross multiply
    781,560.66x = 1,078,756.47 × 442,225.74
  4. Step 4: Simplify right side
    781,560.66x = 477,053,878,225.54
  5. Step 5: Solve for x
    x = 477,053,878,225.54/781,560.66
  6. Step 6: Final answer
    x = 610,386.25

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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.