Home / 1,152,655.89-1,590,681.51-643,358.25

Finding the Fourth Proportional to 1,152,655.89, 1,590,681.51 and 643,358.25

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Solution

The fourth proportional to 1,152,655.89, 1,590,681.51 and 643,358.25 is: 887,843.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,655.89 : 1,590,681.51 = 643,358.25 : x
  2. Step 2: Convert to fraction form
    1,152,655.89/1,590,681.51 = 643,358.25/x
  3. Step 3: Cross multiply
    1,152,655.89x = 1,590,681.51 × 643,358.25
  4. Step 4: Simplify right side
    1,152,655.89x = 1,023,378,072,580.96
  5. Step 5: Solve for x
    x = 1,023,378,072,580.96/1,152,655.89
  6. Step 6: Final answer
    x = 887,843.53

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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.