Home / 1,277,220,020.40-1,915,830,030.60-459,226,033.20

Finding the Fourth Proportional to 1,277,220,020.40, 1,915,830,030.60 and 459,226,033.20

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Solution

The fourth proportional to 1,277,220,020.40, 1,915,830,030.60 and 459,226,033.20 is: 688,839,049.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,220,020.40 : 1,915,830,030.60 = 459,226,033.20 : x
  2. Step 2: Convert to fraction form
    1,277,220,020.40/1,915,830,030.60 = 459,226,033.20/x
  3. Step 3: Cross multiply
    1,277,220,020.40x = 1,915,830,030.60 × 459,226,033.20
  4. Step 4: Simplify right side
    1,277,220,020.40x = 879,799,025,237,872,512
  5. Step 5: Solve for x
    x = 879,799,025,237,872,512/1,277,220,020.40
  6. Step 6: Final answer
    x = 688,839,049.80

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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.