Home / 689,543,999.40-1,034,315,999.10-553,495,103.40

Finding the Fourth Proportional to 689,543,999.40, 1,034,315,999.10 and 553,495,103.40

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Solution

The fourth proportional to 689,543,999.40, 1,034,315,999.10 and 553,495,103.40 is: 830,242,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,543,999.40 : 1,034,315,999.10 = 553,495,103.40 : x
  2. Step 2: Convert to fraction form
    689,543,999.40/1,034,315,999.10 = 553,495,103.40/x
  3. Step 3: Cross multiply
    689,543,999.40x = 1,034,315,999.10 × 553,495,103.40
  4. Step 4: Simplify right side
    689,543,999.40x = 572,488,840,870,128,768
  5. Step 5: Solve for x
    x = 572,488,840,870,128,768/689,543,999.40
  6. Step 6: Final answer
    x = 830,242,655.10

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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.