Home / 407,807,894.10-611,950,989.60-149,049,271.20

Finding the Fourth Proportional to 407,807,894.10, 611,950,989.60 and 149,049,271.20

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Solution

The fourth proportional to 407,807,894.10, 611,950,989.60 and 149,049,271.20 is: 223,661,312.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,807,894.10 : 611,950,989.60 = 149,049,271.20 : x
  2. Step 2: Convert to fraction form
    407,807,894.10/611,950,989.60 = 149,049,271.20/x
  3. Step 3: Cross multiply
    407,807,894.10x = 611,950,989.60 × 149,049,271.20
  4. Step 4: Simplify right side
    407,807,894.10x = 91,210,849,009,998,768
  5. Step 5: Solve for x
    x = 91,210,849,009,998,768/407,807,894.10
  6. Step 6: Final answer
    x = 223,661,312.91

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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.