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Finding the Fourth Proportional to 713,117.48, 984,109.68 and 390,820.52

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Solution

The fourth proportional to 713,117.48, 984,109.68 and 390,820.52 is: 539,336.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,117.48 : 984,109.68 = 390,820.52 : x
  2. Step 2: Convert to fraction form
    713,117.48/984,109.68 = 390,820.52/x
  3. Step 3: Cross multiply
    713,117.48x = 984,109.68 × 390,820.52
  4. Step 4: Simplify right side
    713,117.48x = 384,610,256,874.63
  5. Step 5: Solve for x
    x = 384,610,256,874.63/713,117.48
  6. Step 6: Final answer
    x = 539,336.46

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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.