Home / 638,570,605.20-957,855,907.80-395,445,152.40

Finding the Fourth Proportional to 638,570,605.20, 957,855,907.80 and 395,445,152.40

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Solution

The fourth proportional to 638,570,605.20, 957,855,907.80 and 395,445,152.40 is: 593,167,728.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,570,605.20 : 957,855,907.80 = 395,445,152.40 : x
  2. Step 2: Convert to fraction form
    638,570,605.20/957,855,907.80 = 395,445,152.40/x
  3. Step 3: Cross multiply
    638,570,605.20x = 957,855,907.80 × 395,445,152.40
  4. Step 4: Simplify right side
    638,570,605.20x = 378,779,475,437,211,328
  5. Step 5: Solve for x
    x = 378,779,475,437,211,328/638,570,605.20
  6. Step 6: Final answer
    x = 593,167,728.60

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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.