Home / 910,289,355.61-1,256,199,312.36-492,601,640.77

Finding the Fourth Proportional to 910,289,355.61, 1,256,199,312.36 and 492,601,640.77

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Solution

The fourth proportional to 910,289,355.61, 1,256,199,312.36 and 492,601,640.77 is: 679,790,265.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,289,355.61 : 1,256,199,312.36 = 492,601,640.77 : x
  2. Step 2: Convert to fraction form
    910,289,355.61/1,256,199,312.36 = 492,601,640.77/x
  3. Step 3: Cross multiply
    910,289,355.61x = 1,256,199,312.36 × 492,601,640.77
  4. Step 4: Simplify right side
    910,289,355.61x = 618,805,842,402,681,728
  5. Step 5: Solve for x
    x = 618,805,842,402,681,728/910,289,355.61
  6. Step 6: Final answer
    x = 679,790,265.14

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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.