Home / 6,428,143.78-8,871,094.28-3,527,638.45

Finding the Fourth Proportional to 6,428,143.78, 8,871,094.28 and 3,527,638.45

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Solution

The fourth proportional to 6,428,143.78, 8,871,094.28 and 3,527,638.45 is: 4,868,281.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428,143.78 : 8,871,094.28 = 3,527,638.45 : x
  2. Step 2: Convert to fraction form
    6,428,143.78/8,871,094.28 = 3,527,638.45/x
  3. Step 3: Cross multiply
    6,428,143.78x = 8,871,094.28 × 3,527,638.45
  4. Step 4: Simplify right side
    6,428,143.78x = 31,294,013,275,703.07
  5. Step 5: Solve for x
    x = 31,294,013,275,703.07/6,428,143.78
  6. Step 6: Final answer
    x = 4,868,281.47

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Double scale
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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.