Home / 578,499,415.80-867,749,123.70-431,183,970.60

Finding the Fourth Proportional to 578,499,415.80, 867,749,123.70 and 431,183,970.60

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Solution

The fourth proportional to 578,499,415.80, 867,749,123.70 and 431,183,970.60 is: 646,775,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,499,415.80 : 867,749,123.70 = 431,183,970.60 : x
  2. Step 2: Convert to fraction form
    578,499,415.80/867,749,123.70 = 431,183,970.60/x
  3. Step 3: Cross multiply
    578,499,415.80x = 867,749,123.70 × 431,183,970.60
  4. Step 4: Simplify right side
    578,499,415.80x = 374,159,512,641,636,608
  5. Step 5: Solve for x
    x = 374,159,512,641,636,608/578,499,415.80
  6. Step 6: Final answer
    x = 646,775,955.90

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Double scale
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Similar ratio
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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.