Home / 421,689,725.84-631,710,852.48-290,508,829.52

Finding the Fourth Proportional to 421,689,725.84, 631,710,852.48 and 290,508,829.52

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Solution

The fourth proportional to 421,689,725.84, 631,710,852.48 and 290,508,829.52 is: 435,195,759.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,689,725.84 : 631,710,852.48 = 290,508,829.52 : x
  2. Step 2: Convert to fraction form
    421,689,725.84/631,710,852.48 = 290,508,829.52/x
  3. Step 3: Cross multiply
    421,689,725.84x = 631,710,852.48 × 290,508,829.52
  4. Step 4: Simplify right side
    421,689,725.84x = 183,517,580,349,046,176
  5. Step 5: Solve for x
    x = 183,517,580,349,046,176/421,689,725.84
  6. Step 6: Final answer
    x = 435,195,759.12

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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.