Home / 710,133.48-979,947.32-387,780.62

Finding the Fourth Proportional to 710,133.48, 979,947.32 and 387,780.62

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Solution

The fourth proportional to 710,133.48, 979,947.32 and 387,780.62 is: 535,117.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,133.48 : 979,947.32 = 387,780.62 : x
  2. Step 2: Convert to fraction form
    710,133.48/979,947.32 = 387,780.62/x
  3. Step 3: Cross multiply
    710,133.48x = 979,947.32 × 387,780.62
  4. Step 4: Simplify right side
    710,133.48x = 380,004,572,478.30
  5. Step 5: Solve for x
    x = 380,004,572,478.30/710,133.48
  6. Step 6: Final answer
    x = 535,117.11

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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.