Home / 885,742,986.30-1,328,614,479.45-516,899,312.70

Finding the Fourth Proportional to 885,742,986.30, 1,328,614,479.45 and 516,899,312.70

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Solution

The fourth proportional to 885,742,986.30, 1,328,614,479.45 and 516,899,312.70 is: 775,348,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,742,986.30 : 1,328,614,479.45 = 516,899,312.70 : x
  2. Step 2: Convert to fraction form
    885,742,986.30/1,328,614,479.45 = 516,899,312.70/x
  3. Step 3: Cross multiply
    885,742,986.30x = 1,328,614,479.45 × 516,899,312.70
  4. Step 4: Simplify right side
    885,742,986.30x = 686,759,911,270,973,312
  5. Step 5: Solve for x
    x = 686,759,911,270,973,312/885,742,986.30
  6. Step 6: Final answer
    x = 775,348,969.05

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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.