Home / 749,958,990.40-1,124,042,690.40-386,266,139.20

Finding the Fourth Proportional to 749,958,990.40, 1,124,042,690.40 and 386,266,139.20

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Solution

The fourth proportional to 749,958,990.40, 1,124,042,690.40 and 386,266,139.20 is: 578,937,829.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,958,990.40 : 1,124,042,690.40 = 386,266,139.20 : x
  2. Step 2: Convert to fraction form
    749,958,990.40/1,124,042,690.40 = 386,266,139.20/x
  3. Step 3: Cross multiply
    749,958,990.40x = 1,124,042,690.40 × 386,266,139.20
  4. Step 4: Simplify right side
    749,958,990.40x = 434,179,630,316,788,928
  5. Step 5: Solve for x
    x = 434,179,630,316,788,928/749,958,990.40
  6. Step 6: Final answer
    x = 578,937,829.77

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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.