Home / 1,298,788.70-1,791,168.05-815,398.92

Finding the Fourth Proportional to 1,298,788.70, 1,791,168.05 and 815,398.92

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Solution

The fourth proportional to 1,298,788.70, 1,791,168.05 and 815,398.92 is: 1,124,522.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,788.70 : 1,791,168.05 = 815,398.92 : x
  2. Step 2: Convert to fraction form
    1,298,788.70/1,791,168.05 = 815,398.92/x
  3. Step 3: Cross multiply
    1,298,788.70x = 1,791,168.05 × 815,398.92
  4. Step 4: Simplify right side
    1,298,788.70x = 1,460,516,495,547.00
  5. Step 5: Solve for x
    x = 1,460,516,495,547.00/1,298,788.70
  6. Step 6: Final answer
    x = 1,124,522.03

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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.