Home / 818,547.20-1,227,820.80-257,581.70

Finding the Fourth Proportional to 818,547.20, 1,227,820.80 and 257,581.70

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Solution

The fourth proportional to 818,547.20, 1,227,820.80 and 257,581.70 is: 386,372.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,547.20 : 1,227,820.80 = 257,581.70 : x
  2. Step 2: Convert to fraction form
    818,547.20/1,227,820.80 = 257,581.70/x
  3. Step 3: Cross multiply
    818,547.20x = 1,227,820.80 × 257,581.70
  4. Step 4: Simplify right side
    818,547.20x = 316,264,168,959.36
  5. Step 5: Solve for x
    x = 316,264,168,959.36/818,547.20
  6. Step 6: Final answer
    x = 386,372.55

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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.