Home / 287,580,889,386.40-431,371,334,079.60-120,008,613,877.60

Finding the Fourth Proportional to 287,580,889,386.40, 431,371,334,079.60 and 120,008,613,877.60

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Solution

The fourth proportional to 287,580,889,386.40, 431,371,334,079.60 and 120,008,613,877.60 is: 180,012,920,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,580,889,386.40 : 431,371,334,079.60 = 120,008,613,877.60 : x
  2. Step 2: Convert to fraction form
    287,580,889,386.40/431,371,334,079.60 = 120,008,613,877.60/x
  3. Step 3: Cross multiply
    287,580,889,386.40x = 431,371,334,079.60 × 120,008,613,877.60
  4. Step 4: Simplify right side
    287,580,889,386.40x = 51,768,275,869,423,911,305,216
  5. Step 5: Solve for x
    x = 51,768,275,869,423,911,305,216/287,580,889,386.40
  6. Step 6: Final answer
    x = 180,012,920,816.40

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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.