Home / 387,460,116.95-535,205,356.90-287,191,820.35

Finding the Fourth Proportional to 387,460,116.95, 535,205,356.90 and 287,191,820.35

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Solution

The fourth proportional to 387,460,116.95, 535,205,356.90 and 287,191,820.35 is: 396,703,025.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,460,116.95 : 535,205,356.90 = 287,191,820.35 : x
  2. Step 2: Convert to fraction form
    387,460,116.95/535,205,356.90 = 287,191,820.35/x
  3. Step 3: Cross multiply
    387,460,116.95x = 535,205,356.90 × 287,191,820.35
  4. Step 4: Simplify right side
    387,460,116.95x = 153,706,600,707,746,496
  5. Step 5: Solve for x
    x = 153,706,600,707,746,496/387,460,116.95
  6. Step 6: Final answer
    x = 396,703,025.64

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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.