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Finding the Fourth Proportional to 578,256.90, 867,385.35 and 368,045.70

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Solution

The fourth proportional to 578,256.90, 867,385.35 and 368,045.70 is: 552,068.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,256.90 : 867,385.35 = 368,045.70 : x
  2. Step 2: Convert to fraction form
    578,256.90/867,385.35 = 368,045.70/x
  3. Step 3: Cross multiply
    578,256.90x = 867,385.35 × 368,045.70
  4. Step 4: Simplify right side
    578,256.90x = 319,237,448,310.50
  5. Step 5: Solve for x
    x = 319,237,448,310.50/578,256.90
  6. Step 6: Final answer
    x = 552,068.55

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Similar ratio
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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.