Home / 589,780.51-813,870.28-360,721.42

Finding the Fourth Proportional to 589,780.51, 813,870.28 and 360,721.42

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Solution

The fourth proportional to 589,780.51, 813,870.28 and 360,721.42 is: 497,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,780.51 : 813,870.28 = 360,721.42 : x
  2. Step 2: Convert to fraction form
    589,780.51/813,870.28 = 360,721.42/x
  3. Step 3: Cross multiply
    589,780.51x = 813,870.28 × 360,721.42
  4. Step 4: Simplify right side
    589,780.51x = 293,580,443,097.40
  5. Step 5: Solve for x
    x = 293,580,443,097.40/589,780.51
  6. Step 6: Final answer
    x = 497,779.15

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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.