Home / 1,161,128,930.90-1,602,306,235.46-678,365,628.10

Finding the Fourth Proportional to 1,161,128,930.90, 1,602,306,235.46 and 678,365,628.10

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Solution

The fourth proportional to 1,161,128,930.90, 1,602,306,235.46 and 678,365,628.10 is: 936,114,368.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161,128,930.90 : 1,602,306,235.46 = 678,365,628.10 : x
  2. Step 2: Convert to fraction form
    1,161,128,930.90/1,602,306,235.46 = 678,365,628.10/x
  3. Step 3: Cross multiply
    1,161,128,930.90x = 1,602,306,235.46 × 678,365,628.10
  4. Step 4: Simplify right side
    1,161,128,930.90x = 1,086,949,475,826,369,408
  5. Step 5: Solve for x
    x = 1,086,949,475,826,369,408/1,161,128,930.90
  6. Step 6: Final answer
    x = 936,114,368.44

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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.