Home / 912,962,159.67-1,259,781,491.39-511,097,913.91

Finding the Fourth Proportional to 912,962,159.67, 1,259,781,491.39 and 511,097,913.91

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Solution

The fourth proportional to 912,962,159.67, 1,259,781,491.39 and 511,097,913.91 is: 705,255,618.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,962,159.67 : 1,259,781,491.39 = 511,097,913.91 : x
  2. Step 2: Convert to fraction form
    912,962,159.67/1,259,781,491.39 = 511,097,913.91/x
  3. Step 3: Cross multiply
    912,962,159.67x = 1,259,781,491.39 × 511,097,913.91
  4. Step 4: Simplify right side
    912,962,159.67x = 643,871,692,238,736,128
  5. Step 5: Solve for x
    x = 643,871,692,238,736,128/912,962,159.67
  6. Step 6: Final answer
    x = 705,255,618.12

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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.