Home / 717,143,941.16-989,632,510.96-399,587,779.52

Finding the Fourth Proportional to 717,143,941.16, 989,632,510.96 and 399,587,779.52

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Solution

The fourth proportional to 717,143,941.16, 989,632,510.96 and 399,587,779.52 is: 551,416,577.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,143,941.16 : 989,632,510.96 = 399,587,779.52 : x
  2. Step 2: Convert to fraction form
    717,143,941.16/989,632,510.96 = 399,587,779.52/x
  3. Step 3: Cross multiply
    717,143,941.16x = 989,632,510.96 × 399,587,779.52
  4. Step 4: Simplify right side
    717,143,941.16x = 395,445,057,595,308,480
  5. Step 5: Solve for x
    x = 395,445,057,595,308,480/717,143,941.16
  6. Step 6: Final answer
    x = 551,416,577.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.