Home / 905,356.77-1,249,500.95-542,979.98

Finding the Fourth Proportional to 905,356.77, 1,249,500.95 and 542,979.98

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Solution

The fourth proportional to 905,356.77, 1,249,500.95 and 542,979.98 is: 749,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,356.77 : 1,249,500.95 = 542,979.98 : x
  2. Step 2: Convert to fraction form
    905,356.77/1,249,500.95 = 542,979.98/x
  3. Step 3: Cross multiply
    905,356.77x = 1,249,500.95 × 542,979.98
  4. Step 4: Simplify right side
    905,356.77x = 678,454,005,168.86
  5. Step 5: Solve for x
    x = 678,454,005,168.86/905,356.77
  6. Step 6: Final answer
    x = 749,377.51

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Double scale
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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.