Home / 870,312.42-1,200,723.21-568,681.38

Finding the Fourth Proportional to 870,312.42, 1,200,723.21 and 568,681.38

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Solution

The fourth proportional to 870,312.42, 1,200,723.21 and 568,681.38 is: 784,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,312.42 : 1,200,723.21 = 568,681.38 : x
  2. Step 2: Convert to fraction form
    870,312.42/1,200,723.21 = 568,681.38/x
  3. Step 3: Cross multiply
    870,312.42x = 1,200,723.21 × 568,681.38
  4. Step 4: Simplify right side
    870,312.42x = 682,828,932,060.83
  5. Step 5: Solve for x
    x = 682,828,932,060.83/870,312.42
  6. Step 6: Final answer
    x = 784,579.10

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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.