Home / 830,744,339.60-1,246,116,509.40-400,762,643.60

Finding the Fourth Proportional to 830,744,339.60, 1,246,116,509.40 and 400,762,643.60

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Solution

The fourth proportional to 830,744,339.60, 1,246,116,509.40 and 400,762,643.60 is: 601,143,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,744,339.60 : 1,246,116,509.40 = 400,762,643.60 : x
  2. Step 2: Convert to fraction form
    830,744,339.60/1,246,116,509.40 = 400,762,643.60/x
  3. Step 3: Cross multiply
    830,744,339.60x = 1,246,116,509.40 × 400,762,643.60
  4. Step 4: Simplify right side
    830,744,339.60x = 499,396,946,540,748,288
  5. Step 5: Solve for x
    x = 499,396,946,540,748,288/830,744,339.60
  6. Step 6: Final answer
    x = 601,143,965.40

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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.