Home / 712,804.69-1,069,206.63-665,565.49

Finding the Fourth Proportional to 712,804.69, 1,069,206.63 and 665,565.49

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Solution

The fourth proportional to 712,804.69, 1,069,206.63 and 665,565.49 is: 998,347.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,804.69 : 1,069,206.63 = 665,565.49 : x
  2. Step 2: Convert to fraction form
    712,804.69/1,069,206.63 = 665,565.49/x
  3. Step 3: Cross multiply
    712,804.69x = 1,069,206.63 × 665,565.49
  4. Step 4: Simplify right side
    712,804.69x = 711,627,034,607.20
  5. Step 5: Solve for x
    x = 711,627,034,607.20/712,804.69
  6. Step 6: Final answer
    x = 998,347.86

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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.