Home / 619,488,019.70-929,232,029.55-434,058,413.30

Finding the Fourth Proportional to 619,488,019.70, 929,232,029.55 and 434,058,413.30

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Solution

The fourth proportional to 619,488,019.70, 929,232,029.55 and 434,058,413.30 is: 651,087,619.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,488,019.70 : 929,232,029.55 = 434,058,413.30 : x
  2. Step 2: Convert to fraction form
    619,488,019.70/929,232,029.55 = 434,058,413.30/x
  3. Step 3: Cross multiply
    619,488,019.70x = 929,232,029.55 × 434,058,413.30
  4. Step 4: Simplify right side
    619,488,019.70x = 403,340,980,334,011,712
  5. Step 5: Solve for x
    x = 403,340,980,334,011,712/619,488,019.70
  6. Step 6: Final answer
    x = 651,087,619.95

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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.