Home / 385,881,374.66-578,820,916.77-109,532,822.78

Finding the Fourth Proportional to 385,881,374.66, 578,820,916.77 and 109,532,822.78

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Solution

The fourth proportional to 385,881,374.66, 578,820,916.77 and 109,532,822.78 is: 164,298,909.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,881,374.66 : 578,820,916.77 = 109,532,822.78 : x
  2. Step 2: Convert to fraction form
    385,881,374.66/578,820,916.77 = 109,532,822.78/x
  3. Step 3: Cross multiply
    385,881,374.66x = 578,820,916.77 × 109,532,822.78
  4. Step 4: Simplify right side
    385,881,374.66x = 63,399,888,894,620,696
  5. Step 5: Solve for x
    x = 63,399,888,894,620,696/385,881,374.66
  6. Step 6: Final answer
    x = 164,298,909.09

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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.