Home / 749,088,003.40-1,123,632,005.10-386,290,947.40

Finding the Fourth Proportional to 749,088,003.40, 1,123,632,005.10 and 386,290,947.40

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Solution

The fourth proportional to 749,088,003.40, 1,123,632,005.10 and 386,290,947.40 is: 579,436,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,088,003.40 : 1,123,632,005.10 = 386,290,947.40 : x
  2. Step 2: Convert to fraction form
    749,088,003.40/1,123,632,005.10 = 386,290,947.40/x
  3. Step 3: Cross multiply
    749,088,003.40x = 1,123,632,005.10 × 386,290,947.40
  4. Step 4: Simplify right side
    749,088,003.40x = 434,048,871,779,040,576
  5. Step 5: Solve for x
    x = 434,048,871,779,040,576/749,088,003.40
  6. Step 6: Final answer
    x = 579,436,421.10

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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.