Home / 501,118,365.31-691,559,070.29-289,421,263.24

Finding the Fourth Proportional to 501,118,365.31, 691,559,070.29 and 289,421,263.24

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Solution

The fourth proportional to 501,118,365.31, 691,559,070.29 and 289,421,263.24 is: 399,410,425.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,118,365.31 : 691,559,070.29 = 289,421,263.24 : x
  2. Step 2: Convert to fraction form
    501,118,365.31/691,559,070.29 = 289,421,263.24/x
  3. Step 3: Cross multiply
    501,118,365.31x = 691,559,070.29 × 289,421,263.24
  4. Step 4: Simplify right side
    501,118,365.31x = 200,151,899,728,411,744
  5. Step 5: Solve for x
    x = 200,151,899,728,411,744/501,118,365.31
  6. Step 6: Final answer
    x = 399,410,425.93

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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.