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Finding the Fourth Proportional to 806,718,487.80, 1,210,077,731.70 and 788,802,583.80

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Solution

The fourth proportional to 806,718,487.80, 1,210,077,731.70 and 788,802,583.80 is: 1,183,203,875.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,718,487.80 : 1,210,077,731.70 = 788,802,583.80 : x
  2. Step 2: Convert to fraction form
    806,718,487.80/1,210,077,731.70 = 788,802,583.80/x
  3. Step 3: Cross multiply
    806,718,487.80x = 1,210,077,731.70 × 788,802,583.80
  4. Step 4: Simplify right side
    806,718,487.80x = 954,512,441,363,803,136
  5. Step 5: Solve for x
    x = 954,512,441,363,803,136/806,718,487.80
  6. Step 6: Final answer
    x = 1,183,203,875.70

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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.