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Finding the Fourth Proportional to 615,386.44, 921,291.96 and 358,435.54

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Solution

The fourth proportional to 615,386.44, 921,291.96 and 358,435.54 is: 536,612.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,386.44 : 921,291.96 = 358,435.54 : x
  2. Step 2: Convert to fraction form
    615,386.44/921,291.96 = 358,435.54/x
  3. Step 3: Cross multiply
    615,386.44x = 921,291.96 × 358,435.54
  4. Step 4: Simplify right side
    615,386.44x = 330,223,781,180.26
  5. Step 5: Solve for x
    x = 330,223,781,180.26/615,386.44
  6. Step 6: Final answer
    x = 536,612.05

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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.