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Finding the Fourth Proportional to 713,210.24, 984,254.52 and 390,920.26

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Solution

The fourth proportional to 713,210.24, 984,254.52 and 390,920.26 is: 539,483.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,210.24 : 984,254.52 = 390,920.26 : x
  2. Step 2: Convert to fraction form
    713,210.24/984,254.52 = 390,920.26/x
  3. Step 3: Cross multiply
    713,210.24x = 984,254.52 × 390,920.26
  4. Step 4: Simplify right side
    713,210.24x = 384,765,032,864.58
  5. Step 5: Solve for x
    x = 384,765,032,864.58/713,210.24
  6. Step 6: Final answer
    x = 539,483.33

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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.