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Finding the Fourth Proportional to 640,671.68, 884,128.51 and 350,301.98

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Solution

The fourth proportional to 640,671.68, 884,128.51 and 350,301.98 is: 483,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,671.68 : 884,128.51 = 350,301.98 : x
  2. Step 2: Convert to fraction form
    640,671.68/884,128.51 = 350,301.98/x
  3. Step 3: Cross multiply
    640,671.68x = 884,128.51 × 350,301.98
  4. Step 4: Simplify right side
    640,671.68x = 309,711,967,627.45
  5. Step 5: Solve for x
    x = 309,711,967,627.45/640,671.68
  6. Step 6: Final answer
    x = 483,417.60

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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.