Home / 521,208,870.40-781,909,416.96-171,474,630.40

Finding the Fourth Proportional to 521,208,870.40, 781,909,416.96 and 171,474,630.40

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Solution

The fourth proportional to 521,208,870.40, 781,909,416.96 and 171,474,630.40 is: 257,243,565.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,208,870.40 : 781,909,416.96 = 171,474,630.40 : x
  2. Step 2: Convert to fraction form
    521,208,870.40/781,909,416.96 = 171,474,630.40/x
  3. Step 3: Cross multiply
    521,208,870.40x = 781,909,416.96 × 171,474,630.40
  4. Step 4: Simplify right side
    521,208,870.40x = 134,077,628,279,495,504
  5. Step 5: Solve for x
    x = 134,077,628,279,495,504/521,208,870.40
  6. Step 6: Final answer
    x = 257,243,565.67

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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.