Home / 290,427,476.80-435,641,215.20-288,726,865.60

Finding the Fourth Proportional to 290,427,476.80, 435,641,215.20 and 288,726,865.60

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Solution

The fourth proportional to 290,427,476.80, 435,641,215.20 and 288,726,865.60 is: 433,090,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,427,476.80 : 435,641,215.20 = 288,726,865.60 : x
  2. Step 2: Convert to fraction form
    290,427,476.80/435,641,215.20 = 288,726,865.60/x
  3. Step 3: Cross multiply
    290,427,476.80x = 435,641,215.20 × 288,726,865.60
  4. Step 4: Simplify right side
    290,427,476.80x = 125,781,322,590,871,088
  5. Step 5: Solve for x
    x = 125,781,322,590,871,088/290,427,476.80
  6. Step 6: Final answer
    x = 433,090,298.40

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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.