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Finding the Fourth Proportional to 713,113.49, 984,104.16 and 390,816.52

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Solution

The fourth proportional to 713,113.49, 984,104.16 and 390,816.52 is: 539,330.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,113.49 : 984,104.16 = 390,816.52 : x
  2. Step 2: Convert to fraction form
    713,113.49/984,104.16 = 390,816.52/x
  3. Step 3: Cross multiply
    713,113.49x = 984,104.16 × 390,816.52
  4. Step 4: Simplify right side
    713,113.49x = 384,604,163,128.72
  5. Step 5: Solve for x
    x = 384,604,163,128.72/713,113.49
  6. Step 6: Final answer
    x = 539,330.93

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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.