Home / 854,656,985.40-1,281,985,478.10-716,907,478.20

Finding the Fourth Proportional to 854,656,985.40, 1,281,985,478.10 and 716,907,478.20

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Solution

The fourth proportional to 854,656,985.40, 1,281,985,478.10 and 716,907,478.20 is: 1,075,361,217.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,656,985.40 : 1,281,985,478.10 = 716,907,478.20 : x
  2. Step 2: Convert to fraction form
    854,656,985.40/1,281,985,478.10 = 716,907,478.20/x
  3. Step 3: Cross multiply
    854,656,985.40x = 1,281,985,478.10 × 716,907,478.20
  4. Step 4: Simplify right side
    854,656,985.40x = 919,064,976,193,692,288
  5. Step 5: Solve for x
    x = 919,064,976,193,692,288/854,656,985.40
  6. Step 6: Final answer
    x = 1,075,361,217.30

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Double scale
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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.