Home / 645,251.36-890,428.56-358,766.24

Finding the Fourth Proportional to 645,251.36, 890,428.56 and 358,766.24

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Solution

The fourth proportional to 645,251.36, 890,428.56 and 358,766.24 is: 495,087.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,251.36 : 890,428.56 = 358,766.24 : x
  2. Step 2: Convert to fraction form
    645,251.36/890,428.56 = 358,766.24/x
  3. Step 3: Cross multiply
    645,251.36x = 890,428.56 × 358,766.24
  4. Step 4: Simplify right side
    645,251.36x = 319,455,706,459.81
  5. Step 5: Solve for x
    x = 319,455,706,459.81/645,251.36
  6. Step 6: Final answer
    x = 495,087.23

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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.