Home / 828,547.79-1,143,009.88-538,138.79

Finding the Fourth Proportional to 828,547.79, 1,143,009.88 and 538,138.79

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Solution

The fourth proportional to 828,547.79, 1,143,009.88 and 538,138.79 is: 742,380.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,547.79 : 1,143,009.88 = 538,138.79 : x
  2. Step 2: Convert to fraction form
    828,547.79/1,143,009.88 = 538,138.79/x
  3. Step 3: Cross multiply
    828,547.79x = 1,143,009.88 × 538,138.79
  4. Step 4: Simplify right side
    828,547.79x = 615,097,954,034.17
  5. Step 5: Solve for x
    x = 615,097,954,034.17/828,547.79
  6. Step 6: Final answer
    x = 742,380.78

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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.