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Finding the Fourth Proportional to 518,133.60, 715,010.40 and 291,774.24

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Solution

The fourth proportional to 518,133.60, 715,010.40 and 291,774.24 is: 402,640.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,133.60 : 715,010.40 = 291,774.24 : x
  2. Step 2: Convert to fraction form
    518,133.60/715,010.40 = 291,774.24/x
  3. Step 3: Cross multiply
    518,133.60x = 715,010.40 × 291,774.24
  4. Step 4: Simplify right side
    518,133.60x = 208,621,616,052.10
  5. Step 5: Solve for x
    x = 208,621,616,052.10/518,133.60
  6. Step 6: Final answer
    x = 402,640.59

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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.