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Finding the Fourth Proportional to 528,898,688.80, 793,348,033.20 and 365,640,013.60

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Solution

The fourth proportional to 528,898,688.80, 793,348,033.20 and 365,640,013.60 is: 548,460,020.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,898,688.80 : 793,348,033.20 = 365,640,013.60 : x
  2. Step 2: Convert to fraction form
    528,898,688.80/793,348,033.20 = 365,640,013.60/x
  3. Step 3: Cross multiply
    528,898,688.80x = 793,348,033.20 × 365,640,013.60
  4. Step 4: Simplify right side
    528,898,688.80x = 290,079,785,648,781,312
  5. Step 5: Solve for x
    x = 290,079,785,648,781,312/528,898,688.80
  6. Step 6: Final answer
    x = 548,460,020.40

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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.