Home / 1,290,258,428.80-1,935,387,643.20-709,783,139.20

Finding the Fourth Proportional to 1,290,258,428.80, 1,935,387,643.20 and 709,783,139.20

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Solution

The fourth proportional to 1,290,258,428.80, 1,935,387,643.20 and 709,783,139.20 is: 1,064,674,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,258,428.80 : 1,935,387,643.20 = 709,783,139.20 : x
  2. Step 2: Convert to fraction form
    1,290,258,428.80/1,935,387,643.20 = 709,783,139.20/x
  3. Step 3: Cross multiply
    1,290,258,428.80x = 1,935,387,643.20 × 709,783,139.20
  4. Step 4: Simplify right side
    1,290,258,428.80x = 1,373,705,516,959,385,600
  5. Step 5: Solve for x
    x = 1,373,705,516,959,385,600/1,290,258,428.80
  6. Step 6: Final answer
    x = 1,064,674,708.80

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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.