Home / 721,095.89-1,081,328.27-342,124.66

Finding the Fourth Proportional to 721,095.89, 1,081,328.27 and 342,124.66

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Solution

The fourth proportional to 721,095.89, 1,081,328.27 and 342,124.66 is: 513,037.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,095.89 : 1,081,328.27 = 342,124.66 : x
  2. Step 2: Convert to fraction form
    721,095.89/1,081,328.27 = 342,124.66/x
  3. Step 3: Cross multiply
    721,095.89x = 1,081,328.27 × 342,124.66
  4. Step 4: Simplify right side
    721,095.89x = 369,949,066,363.18
  5. Step 5: Solve for x
    x = 369,949,066,363.18/721,095.89
  6. Step 6: Final answer
    x = 513,037.27

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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.