Home / 921,502.07-1,271,678.77-513,629.81

Finding the Fourth Proportional to 921,502.07, 1,271,678.77 and 513,629.81

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Solution

The fourth proportional to 921,502.07, 1,271,678.77 and 513,629.81 is: 708,812.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,502.07 : 1,271,678.77 = 513,629.81 : x
  2. Step 2: Convert to fraction form
    921,502.07/1,271,678.77 = 513,629.81/x
  3. Step 3: Cross multiply
    921,502.07x = 1,271,678.77 × 513,629.81
  4. Step 4: Simplify right side
    921,502.07x = 653,172,124,068.57
  5. Step 5: Solve for x
    x = 653,172,124,068.57/921,502.07
  6. Step 6: Final answer
    x = 708,812.43

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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.