Home / 709,830.16-979,568.93-387,547.63

Finding the Fourth Proportional to 709,830.16, 979,568.93 and 387,547.63

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Solution

The fourth proportional to 709,830.16, 979,568.93 and 387,547.63 is: 534,817.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,830.16 : 979,568.93 = 387,547.63 : x
  2. Step 2: Convert to fraction form
    709,830.16/979,568.93 = 387,547.63/x
  3. Step 3: Cross multiply
    709,830.16x = 979,568.93 × 387,547.63
  4. Step 4: Simplify right side
    709,830.16x = 379,629,612,345.29
  5. Step 5: Solve for x
    x = 379,629,612,345.29/709,830.16
  6. Step 6: Final answer
    x = 534,817.53

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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.