Home / 812,274,561.98-1,121,990,378.58-671,713,547.21

Finding the Fourth Proportional to 812,274,561.98, 1,121,990,378.58 and 671,713,547.21

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Solution

The fourth proportional to 812,274,561.98, 1,121,990,378.58 and 671,713,547.21 is: 927,834,223.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,274,561.98 : 1,121,990,378.58 = 671,713,547.21 : x
  2. Step 2: Convert to fraction form
    812,274,561.98/1,121,990,378.58 = 671,713,547.21/x
  3. Step 3: Cross multiply
    812,274,561.98x = 1,121,990,378.58 × 671,713,547.21
  4. Step 4: Simplify right side
    812,274,561.98x = 753,656,137,128,104,064
  5. Step 5: Solve for x
    x = 753,656,137,128,104,064/812,274,561.98
  6. Step 6: Final answer
    x = 927,834,223.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.