Home / 916,009.20-1,374,013.80-679,813.20

Finding the Fourth Proportional to 916,009.20, 1,374,013.80 and 679,813.20

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Solution

The fourth proportional to 916,009.20, 1,374,013.80 and 679,813.20 is: 1,019,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,009.20 : 1,374,013.80 = 679,813.20 : x
  2. Step 2: Convert to fraction form
    916,009.20/1,374,013.80 = 679,813.20/x
  3. Step 3: Cross multiply
    916,009.20x = 1,374,013.80 × 679,813.20
  4. Step 4: Simplify right side
    916,009.20x = 934,072,718,222.16
  5. Step 5: Solve for x
    x = 934,072,718,222.16/916,009.20
  6. Step 6: Final answer
    x = 1,019,719.80

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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.