Home / 1,347,480,040.70-2,021,220,061.05-427,428,386.30

Finding the Fourth Proportional to 1,347,480,040.70, 2,021,220,061.05 and 427,428,386.30

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Solution

The fourth proportional to 1,347,480,040.70, 2,021,220,061.05 and 427,428,386.30 is: 641,142,579.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347,480,040.70 : 2,021,220,061.05 = 427,428,386.30 : x
  2. Step 2: Convert to fraction form
    1,347,480,040.70/2,021,220,061.05 = 427,428,386.30/x
  3. Step 3: Cross multiply
    1,347,480,040.70x = 2,021,220,061.05 × 427,428,386.30
  4. Step 4: Simplify right side
    1,347,480,040.70x = 863,926,829,051,788,928
  5. Step 5: Solve for x
    x = 863,926,829,051,788,928/1,347,480,040.70
  6. Step 6: Final answer
    x = 641,142,579.45

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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.