Home / 429,164,207,965.60-643,746,311,948.40-131,043,663,383.20

Finding the Fourth Proportional to 429,164,207,965.60, 643,746,311,948.40 and 131,043,663,383.20

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Solution

The fourth proportional to 429,164,207,965.60, 643,746,311,948.40 and 131,043,663,383.20 is: 196,565,495,074.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,164,207,965.60 : 643,746,311,948.40 = 131,043,663,383.20 : x
  2. Step 2: Convert to fraction form
    429,164,207,965.60/643,746,311,948.40 = 131,043,663,383.20/x
  3. Step 3: Cross multiply
    429,164,207,965.60x = 643,746,311,948.40 × 131,043,663,383.20
  4. Step 4: Simplify right side
    429,164,207,965.60x = 84,358,875,007,142,584,123,392
  5. Step 5: Solve for x
    x = 84,358,875,007,142,584,123,392/429,164,207,965.60
  6. Step 6: Final answer
    x = 196,565,495,074.80

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Double scale
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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.