Home / 401,520,123.60-553,785,377.04-290,427,696.96

Finding the Fourth Proportional to 401,520,123.60, 553,785,377.04 and 290,427,696.96

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Solution

The fourth proportional to 401,520,123.60, 553,785,377.04 and 290,427,696.96 is: 400,564,261.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,520,123.60 : 553,785,377.04 = 290,427,696.96 : x
  2. Step 2: Convert to fraction form
    401,520,123.60/553,785,377.04 = 290,427,696.96/x
  3. Step 3: Cross multiply
    401,520,123.60x = 553,785,377.04 × 290,427,696.96
  4. Step 4: Simplify right side
    401,520,123.60x = 160,834,611,663,852,448
  5. Step 5: Solve for x
    x = 160,834,611,663,852,448/401,520,123.60
  6. Step 6: Final answer
    x = 400,564,261.19

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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.