Home / 678,280.32-936,038.57-372,385.17

Finding the Fourth Proportional to 678,280.32, 936,038.57 and 372,385.17

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Solution

The fourth proportional to 678,280.32, 936,038.57 and 372,385.17 is: 513,897.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,280.32 : 936,038.57 = 372,385.17 : x
  2. Step 2: Convert to fraction form
    678,280.32/936,038.57 = 372,385.17/x
  3. Step 3: Cross multiply
    678,280.32x = 936,038.57 × 372,385.17
  4. Step 4: Simplify right side
    678,280.32x = 348,566,880,154.08
  5. Step 5: Solve for x
    x = 348,566,880,154.08/678,280.32
  6. Step 6: Final answer
    x = 513,897.97

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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.