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Finding the Fourth Proportional to 775,807,179.40, 1,070,636,583.90 and 423,405,787.06

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Solution

The fourth proportional to 775,807,179.40, 1,070,636,583.90 and 423,405,787.06 is: 584,312,362.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,807,179.40 : 1,070,636,583.90 = 423,405,787.06 : x
  2. Step 2: Convert to fraction form
    775,807,179.40/1,070,636,583.90 = 423,405,787.06/x
  3. Step 3: Cross multiply
    775,807,179.40x = 1,070,636,583.90 × 423,405,787.06
  4. Step 4: Simplify right side
    775,807,179.40x = 453,313,725,461,409,216
  5. Step 5: Solve for x
    x = 453,313,725,461,409,216/775,807,179.40
  6. Step 6: Final answer
    x = 584,312,362.01

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1.5x scale

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.