Home / 918,584,969.40-1,377,877,454.10-660,304,643.40

Finding the Fourth Proportional to 918,584,969.40, 1,377,877,454.10 and 660,304,643.40

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Solution

The fourth proportional to 918,584,969.40, 1,377,877,454.10 and 660,304,643.40 is: 990,456,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,584,969.40 : 1,377,877,454.10 = 660,304,643.40 : x
  2. Step 2: Convert to fraction form
    918,584,969.40/1,377,877,454.10 = 660,304,643.40/x
  3. Step 3: Cross multiply
    918,584,969.40x = 1,377,877,454.10 × 660,304,643.40
  4. Step 4: Simplify right side
    918,584,969.40x = 909,818,880,978,400,256
  5. Step 5: Solve for x
    x = 909,818,880,978,400,256/918,584,969.40
  6. Step 6: Final answer
    x = 990,456,965.10

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1.5x scale

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.