Home / 1,039,965-1,559,946.78-391,663.47

Finding the Fourth Proportional to 1,039,965, 1,559,946.78 and 391,663.47

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Solution

The fourth proportional to 1,039,965, 1,559,946.78 and 391,663.47 is: 587,494.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,965 : 1,559,946.78 = 391,663.47 : x
  2. Step 2: Convert to fraction form
    1,039,965/1,559,946.78 = 391,663.47/x
  3. Step 3: Cross multiply
    1,039,965x = 1,559,946.78 × 391,663.47
  4. Step 4: Simplify right side
    1,039,965x = 610,974,168,870.13
  5. Step 5: Solve for x
    x = 610,974,168,870.13/1,039,965
  6. Step 6: Final answer
    x = 587,494.93

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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.