Home / 918,585,021.40-1,377,877,532.10-660,304,695.40

Finding the Fourth Proportional to 918,585,021.40, 1,377,877,532.10 and 660,304,695.40

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Solution

The fourth proportional to 918,585,021.40, 1,377,877,532.10 and 660,304,695.40 is: 990,457,043.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,585,021.40 : 1,377,877,532.10 = 660,304,695.40 : x
  2. Step 2: Convert to fraction form
    918,585,021.40/1,377,877,532.10 = 660,304,695.40/x
  3. Step 3: Cross multiply
    918,585,021.40x = 1,377,877,532.10 × 660,304,695.40
  4. Step 4: Simplify right side
    918,585,021.40x = 909,819,004,131,794,176
  5. Step 5: Solve for x
    x = 909,819,004,131,794,176/918,585,021.40
  6. Step 6: Final answer
    x = 990,457,043.10

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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.