Home / 614,403.78-921,787.12-315,094.05

Finding the Fourth Proportional to 614,403.78, 921,787.12 and 315,094.05

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Solution

The fourth proportional to 614,403.78, 921,787.12 and 315,094.05 is: 472,734.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,403.78 : 921,787.12 = 315,094.05 : x
  2. Step 2: Convert to fraction form
    614,403.78/921,787.12 = 315,094.05/x
  3. Step 3: Cross multiply
    614,403.78x = 921,787.12 × 315,094.05
  4. Step 4: Simplify right side
    614,403.78x = 290,449,637,272.50
  5. Step 5: Solve for x
    x = 290,449,637,272.50/614,403.78
  6. Step 6: Final answer
    x = 472,734.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.