Home / 870,047.07-1,200,809.36-507,470.93

Finding the Fourth Proportional to 870,047.07, 1,200,809.36 and 507,470.93

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Solution

The fourth proportional to 870,047.07, 1,200,809.36 and 507,470.93 is: 700,394.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,047.07 : 1,200,809.36 = 507,470.93 : x
  2. Step 2: Convert to fraction form
    870,047.07/1,200,809.36 = 507,470.93/x
  3. Step 3: Cross multiply
    870,047.07x = 1,200,809.36 × 507,470.93
  4. Step 4: Simplify right side
    870,047.07x = 609,375,846,942.61
  5. Step 5: Solve for x
    x = 609,375,846,942.61/870,047.07
  6. Step 6: Final answer
    x = 700,394.11

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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.