Home / 665,606,365.62-918,830,994.72-397,776,709.16

Finding the Fourth Proportional to 665,606,365.62, 918,830,994.72 and 397,776,709.16

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Solution

The fourth proportional to 665,606,365.62, 918,830,994.72 and 397,776,709.16 is: 549,107,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,606,365.62 : 918,830,994.72 = 397,776,709.16 : x
  2. Step 2: Convert to fraction form
    665,606,365.62/918,830,994.72 = 397,776,709.16/x
  3. Step 3: Cross multiply
    665,606,365.62x = 918,830,994.72 × 397,776,709.16
  4. Step 4: Simplify right side
    665,606,365.62x = 365,489,569,349,336,768
  5. Step 5: Solve for x
    x = 365,489,569,349,336,768/665,606,365.62
  6. Step 6: Final answer
    x = 549,107,683.20

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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.