Home / 912,961,979.34-1,259,781,243.08-511,097,733.57

Finding the Fourth Proportional to 912,961,979.34, 1,259,781,243.08 and 511,097,733.57

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Solution

The fourth proportional to 912,961,979.34, 1,259,781,243.08 and 511,097,733.57 is: 705,255,369.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,961,979.34 : 1,259,781,243.08 = 511,097,733.57 : x
  2. Step 2: Convert to fraction form
    912,961,979.34/1,259,781,243.08 = 511,097,733.57/x
  3. Step 3: Cross multiply
    912,961,979.34x = 1,259,781,243.08 × 511,097,733.57
  4. Step 4: Simplify right side
    912,961,979.34x = 643,871,338,127,248,768
  5. Step 5: Solve for x
    x = 643,871,338,127,248,768/912,961,979.34
  6. Step 6: Final answer
    x = 705,255,369.55

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Double scale
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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.