Home / 557,017,685.12-768,702,835.19-306,130,969.87

Finding the Fourth Proportional to 557,017,685.12, 768,702,835.19 and 306,130,969.87

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Solution

The fourth proportional to 557,017,685.12, 768,702,835.19 and 306,130,969.87 is: 422,470,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,017,685.12 : 768,702,835.19 = 306,130,969.87 : x
  2. Step 2: Convert to fraction form
    557,017,685.12/768,702,835.19 = 306,130,969.87/x
  3. Step 3: Cross multiply
    557,017,685.12x = 768,702,835.19 × 306,130,969.87
  4. Step 4: Simplify right side
    557,017,685.12x = 235,323,744,478,533,472
  5. Step 5: Solve for x
    x = 235,323,744,478,533,472/557,017,685.12
  6. Step 6: Final answer
    x = 422,470,867.20

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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.