Home / 415,358,963.32-573,371,860.53-258,803,420.98

Finding the Fourth Proportional to 415,358,963.32, 573,371,860.53 and 258,803,420.98

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Solution

The fourth proportional to 415,358,963.32, 573,371,860.53 and 258,803,420.98 is: 357,258,689.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,358,963.32 : 573,371,860.53 = 258,803,420.98 : x
  2. Step 2: Convert to fraction form
    415,358,963.32/573,371,860.53 = 258,803,420.98/x
  3. Step 3: Cross multiply
    415,358,963.32x = 573,371,860.53 × 258,803,420.98
  4. Step 4: Simplify right side
    415,358,963.32x = 148,390,598,998,831,424
  5. Step 5: Solve for x
    x = 148,390,598,998,831,424/415,358,963.32
  6. Step 6: Final answer
    x = 357,258,689.72

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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.