Home / 781,547.50-1,078,535.55-442,008.46

Finding the Fourth Proportional to 781,547.50, 1,078,535.55 and 442,008.46

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Solution

The fourth proportional to 781,547.50, 1,078,535.55 and 442,008.46 is: 609,971.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,547.50 : 1,078,535.55 = 442,008.46 : x
  2. Step 2: Convert to fraction form
    781,547.50/1,078,535.55 = 442,008.46/x
  3. Step 3: Cross multiply
    781,547.50x = 1,078,535.55 × 442,008.46
  4. Step 4: Simplify right side
    781,547.50x = 476,721,837,510.75
  5. Step 5: Solve for x
    x = 476,721,837,510.75/781,547.50
  6. Step 6: Final answer
    x = 609,971.67

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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.