Home / 813,369.07-1,121,981.83-507,298.42

Finding the Fourth Proportional to 813,369.07, 1,121,981.83 and 507,298.42

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Solution

The fourth proportional to 813,369.07, 1,121,981.83 and 507,298.42 is: 699,780.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,369.07 : 1,121,981.83 = 507,298.42 : x
  2. Step 2: Convert to fraction form
    813,369.07/1,121,981.83 = 507,298.42/x
  3. Step 3: Cross multiply
    813,369.07x = 1,121,981.83 × 507,298.42
  4. Step 4: Simplify right side
    813,369.07x = 569,179,609,627.71
  5. Step 5: Solve for x
    x = 569,179,609,627.71/813,369.07
  6. Step 6: Final answer
    x = 699,780.25

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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.