Home / 699,642,708,527.79-965,510,508,091.95-390,999,218,868.03

Finding the Fourth Proportional to 699,642,708,527.79, 965,510,508,091.95 and 390,999,218,868.03

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Solution

The fourth proportional to 699,642,708,527.79, 965,510,508,091.95 and 390,999,218,868.03 is: 539,580,917,333.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,642,708,527.79 : 965,510,508,091.95 = 390,999,218,868.03 : x
  2. Step 2: Convert to fraction form
    699,642,708,527.79/965,510,508,091.95 = 390,999,218,868.03/x
  3. Step 3: Cross multiply
    699,642,708,527.79x = 965,510,508,091.95 × 390,999,218,868.03
  4. Step 4: Simplify right side
    699,642,708,527.79x = 377,513,854,472,827,191,689,216
  5. Step 5: Solve for x
    x = 377,513,854,472,827,191,689,216/699,642,708,527.79
  6. Step 6: Final answer
    x = 539,580,917,333.08

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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.