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Finding the Fourth Proportional to 688,622.40, 950,143.20 and 416,683.44

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Solution

The fourth proportional to 688,622.40, 950,143.20 and 416,683.44 is: 574,928.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,622.40 : 950,143.20 = 416,683.44 : x
  2. Step 2: Convert to fraction form
    688,622.40/950,143.20 = 416,683.44/x
  3. Step 3: Cross multiply
    688,622.40x = 950,143.20 × 416,683.44
  4. Step 4: Simplify right side
    688,622.40x = 395,908,937,068.61
  5. Step 5: Solve for x
    x = 395,908,937,068.61/688,622.40
  6. Step 6: Final answer
    x = 574,928.93

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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.