Home / 687,018.26-948,085.60-418,746.26

Finding the Fourth Proportional to 687,018.26, 948,085.60 and 418,746.26

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Solution

The fourth proportional to 687,018.26, 948,085.60 and 418,746.26 is: 577,870.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,018.26 : 948,085.60 = 418,746.26 : x
  2. Step 2: Convert to fraction form
    687,018.26/948,085.60 = 418,746.26/x
  3. Step 3: Cross multiply
    687,018.26x = 948,085.60 × 418,746.26
  4. Step 4: Simplify right side
    687,018.26x = 397,007,299,159.86
  5. Step 5: Solve for x
    x = 397,007,299,159.86/687,018.26
  6. Step 6: Final answer
    x = 577,870.08

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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.