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Finding the Fourth Proportional to 570,008,099.73, 786,607,892.93 and 309,242,117.01

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Solution

The fourth proportional to 570,008,099.73, 786,607,892.93 and 309,242,117.01 is: 426,752,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,008,099.73 : 786,607,892.93 = 309,242,117.01 : x
  2. Step 2: Convert to fraction form
    570,008,099.73/786,607,892.93 = 309,242,117.01/x
  3. Step 3: Cross multiply
    570,008,099.73x = 786,607,892.93 × 309,242,117.01
  4. Step 4: Simplify right side
    570,008,099.73x = 243,252,290,064,902,368
  5. Step 5: Solve for x
    x = 243,252,290,064,902,368/570,008,099.73
  6. Step 6: Final answer
    x = 426,752,339.45

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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.