Home / 622,720,590-859,211,845.20-371,776,142.40

Finding the Fourth Proportional to 622,720,590, 859,211,845.20 and 371,776,142.40

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Solution

The fourth proportional to 622,720,590, 859,211,845.20 and 371,776,142.40 is: 512,965,960.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,720,590 : 859,211,845.20 = 371,776,142.40 : x
  2. Step 2: Convert to fraction form
    622,720,590/859,211,845.20 = 371,776,142.40/x
  3. Step 3: Cross multiply
    622,720,590x = 859,211,845.20 × 371,776,142.40
  4. Step 4: Simplify right side
    622,720,590x = 319,434,465,312,841,984
  5. Step 5: Solve for x
    x = 319,434,465,312,841,984/622,720,590
  6. Step 6: Final answer
    x = 512,965,960.08

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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.