Home / 779,663.85-1,169,905.65-553,419.51

Finding the Fourth Proportional to 779,663.85, 1,169,905.65 and 553,419.51

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Solution

The fourth proportional to 779,663.85, 1,169,905.65 and 553,419.51 is: 830,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,663.85 : 1,169,905.65 = 553,419.51 : x
  2. Step 2: Convert to fraction form
    779,663.85/1,169,905.65 = 553,419.51/x
  3. Step 3: Cross multiply
    779,663.85x = 1,169,905.65 × 553,419.51
  4. Step 4: Simplify right side
    779,663.85x = 647,448,611,569.23
  5. Step 5: Solve for x
    x = 647,448,611,569.23/779,663.85
  6. Step 6: Final answer
    x = 830,420.20

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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.