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Finding the Fourth Proportional to 885,736,004.20, 1,328,604,006.30 and 838,384,611.10

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Solution

The fourth proportional to 885,736,004.20, 1,328,604,006.30 and 838,384,611.10 is: 1,257,576,916.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,736,004.20 : 1,328,604,006.30 = 838,384,611.10 : x
  2. Step 2: Convert to fraction form
    885,736,004.20/1,328,604,006.30 = 838,384,611.10/x
  3. Step 3: Cross multiply
    885,736,004.20x = 1,328,604,006.30 × 838,384,611.10
  4. Step 4: Simplify right side
    885,736,004.20x = 1,113,881,153,127,727,488
  5. Step 5: Solve for x
    x = 1,113,881,153,127,727,488/885,736,004.20
  6. Step 6: Final answer
    x = 1,257,576,916.65

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1.5x scale

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.