Home / 819,931.80-1,229,897.70-709,339.80

Finding the Fourth Proportional to 819,931.80, 1,229,897.70 and 709,339.80

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Solution

The fourth proportional to 819,931.80, 1,229,897.70 and 709,339.80 is: 1,064,009.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,931.80 : 1,229,897.70 = 709,339.80 : x
  2. Step 2: Convert to fraction form
    819,931.80/1,229,897.70 = 709,339.80/x
  3. Step 3: Cross multiply
    819,931.80x = 1,229,897.70 × 709,339.80
  4. Step 4: Simplify right side
    819,931.80x = 872,415,388,538.46
  5. Step 5: Solve for x
    x = 872,415,388,538.46/819,931.80
  6. Step 6: Final answer
    x = 1,064,009.70

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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.