Home / 387,460,116.70-535,205,356.55-287,191,820.10

Finding the Fourth Proportional to 387,460,116.70, 535,205,356.55 and 287,191,820.10

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Solution

The fourth proportional to 387,460,116.70, 535,205,356.55 and 287,191,820.10 is: 396,703,025.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,460,116.70 : 535,205,356.55 = 287,191,820.10 : x
  2. Step 2: Convert to fraction form
    387,460,116.70/535,205,356.55 = 287,191,820.10/x
  3. Step 3: Cross multiply
    387,460,116.70x = 535,205,356.55 × 287,191,820.10
  4. Step 4: Simplify right side
    387,460,116.70x = 153,706,600,474,863,968
  5. Step 5: Solve for x
    x = 153,706,600,474,863,968/387,460,116.70
  6. Step 6: Final answer
    x = 396,703,025.29

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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.