Home / 287,581,323,009.15-431,371,984,513.73-120,009,047,500.35

Finding the Fourth Proportional to 287,581,323,009.15, 431,371,984,513.73 and 120,009,047,500.35

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Solution

The fourth proportional to 287,581,323,009.15, 431,371,984,513.73 and 120,009,047,500.35 is: 180,013,571,250.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,581,323,009.15 : 431,371,984,513.73 = 120,009,047,500.35 : x
  2. Step 2: Convert to fraction form
    287,581,323,009.15/431,371,984,513.73 = 120,009,047,500.35/x
  3. Step 3: Cross multiply
    287,581,323,009.15x = 431,371,984,513.73 × 120,009,047,500.35
  4. Step 4: Simplify right side
    287,581,323,009.15x = 51,768,540,979,828,470,317,056
  5. Step 5: Solve for x
    x = 51,768,540,979,828,470,317,056/287,581,323,009.15
  6. Step 6: Final answer
    x = 180,013,571,250.53

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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.