Home / 902,020,984.80-1,353,031,477.20-638,993,119.20

Finding the Fourth Proportional to 902,020,984.80, 1,353,031,477.20 and 638,993,119.20

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Solution

The fourth proportional to 902,020,984.80, 1,353,031,477.20 and 638,993,119.20 is: 958,489,678.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,020,984.80 : 1,353,031,477.20 = 638,993,119.20 : x
  2. Step 2: Convert to fraction form
    902,020,984.80/1,353,031,477.20 = 638,993,119.20/x
  3. Step 3: Cross multiply
    902,020,984.80x = 1,353,031,477.20 × 638,993,119.20
  4. Step 4: Simplify right side
    902,020,984.80x = 864,577,803,991,811,840
  5. Step 5: Solve for x
    x = 864,577,803,991,811,840/902,020,984.80
  6. Step 6: Final answer
    x = 958,489,678.80

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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.