Home / 521,185,547.31-781,777,660.77-133,008,386.37

Finding the Fourth Proportional to 521,185,547.31, 781,777,660.77 and 133,008,386.37

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Solution

The fourth proportional to 521,185,547.31, 781,777,660.77 and 133,008,386.37 is: 199,512,411.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,185,547.31 : 781,777,660.77 = 133,008,386.37 : x
  2. Step 2: Convert to fraction form
    521,185,547.31/781,777,660.77 = 133,008,386.37/x
  3. Step 3: Cross multiply
    521,185,547.31x = 781,777,660.77 × 133,008,386.37
  4. Step 4: Simplify right side
    521,185,547.31x = 103,982,985,159,130,960
  5. Step 5: Solve for x
    x = 103,982,985,159,130,960/521,185,547.31
  6. Step 6: Final answer
    x = 199,512,411.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.